Peter Pan appears as a major character in the first half of the third season of the ABC fairy tale drama series Once Upon a Time. Here, however, he appears as a ruthless villain as opposed to the benevolent persona commonly seen in various media, specifically Disney. He is portrayed by Robbie Kay.
Peter Pan began as Malcolm, the father of Rumplestiltskin, husband of Evanna, grandfather of Baelfire and the great-grandfather of Henry Mills. Malcolm originally left his son in the care of two spinners, who gave Rumplestiltskin a magical bean to create a portal to leave his careless father. Using the magic bean, Malcolm and Rumplestiltskin travelled to Neverland, a place which Malcolm envisioned in his dreams. Upon arrival, Malcolm discovered he could not fly like in his dreams, and the Shadow told him this is because he did not not belong on the island as it was only for children. Realizing that he could not be a child as he was a father, Malcolm forced Rumplestiltskin to be taken home by the Shadow. Malcolm transformed into his younger self, adopting the name of Peter Pan (which he named himself after Rumplestiltskin's doll). The Shadow informed Pan that his youth is limited, and he will die when the hourglass of Skull Rock is complete.
Some time later, Pan visits Hamelin in the Enchanted Forest posing as the Pied Piper to expand what would later become the Lost Boys, a band of fearful followers who listen to Pan's every command, and is in search for Henry, the son of Emma Swan.
The Shadows arrive with a boy named Baelfire (who, unbeknownst to him, is his grandson). Wendy Darling then arrives in order to save him, but Pan decides to keep her prison and blackmails John and Michael Darling to help him with his tasks, in exchange for their sister Wendy's life.
When the heroes arrive on Neverland in search of Henery, Pan appears to him as a fugitive boy pretending to escape from the Lost Boys. He "befriends" Henry who is also attempting to escape upon arriving in Neverland, following his kidnap from Storybrooke. He later reveals his true identity and tells Henry he possesses "the heart of the truest believer", which he now owns. Pan plots to sacrifice Henry to gain his youth as his time as a young boy begins to fade away. However, Emma, along with a team of heroes (being Snow White, Prince Charming, Rumplestiltskin, Queen Regina and Captain Hook) comes to retrieve the boy.
The battle between the parties last for days, and eventually, they retrieve Henry and return to their home in the real world, known as Storybrooke, with Pan imprisoned. Pan, however, managed to switches his body with Henry's. Once they arrived in Storybrooke, Pan (in Henry's body) orders the Shadow to kill Mother Superior after reading Henry's book. He then steals the original curse from Regina that created Storybrooke, planning to enact it to turn the town into "The New Neverland." Emma soon finds out Henry is not who he seems, and the heroes are able to find out the truth, eventually switching the two bodies back. His plot is successful, though before it takes place, Gold manages to find a way to defeat Pan by sacrificing himself with the Dark One's dagger, thus ending his reign.
He is set to return in the second half of the fifth season when the heroes (led by his son) arrive in the Underworld to rescue Hook.